Table 3. Multivariate Analysis of Factors for Disease-free and Overall Survival in Primary Breast cancer.

		Diseases—free survival		Overall survival
	Category	P value	Hazard ratio (95%CI)	P value	Hazard ratio (95%CI)
Nuclear Grade	3/2,1	0.006	1.546 (1.136–2.106)	0.13	1.299 (0.926–1.821)
Tumor size	≥20/<20mm	<0.001	2.382 (1.856–3.056)	<0.001	2.236 (1.694–2.951)
Ki-67 index	continuous	<0.001	1.014 (1.008–1.020)	<0.001	1.014 (1.008–1.020)
p53over- expression	+/-	<0.001	1.741 (1.347–2.249)	0.001	1.612 (1.215–2.140)
Node Status	+/-	<0.001	6.265 (4.626–8.484)	<0.001	4.377 (3.310–6.328)